Vat coloring-matters and process of producing them.



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ish yellow EDUARD MfiNQI-I, 'OF LUDWIGSHAFEN-ON-THE-RHINE, GERMANY, ASSIGNOR TO BADISCHE ANILIN & SODA FABRIK, 0F LUDWIGSHAFEN-ON-THE-RHINE, GEB- MANY, A 'QORIE'QRATION.

var COLORING-MATTERS AND To all whom it may concern Be it known that I, E UARD Miincu, subject of the King of Bavaria, residing at Ludwigshafen-on-the-Rhine,Germany, have invented new and useful Improvements in Vat, Coloring-Matters and Processes of Prospecification.

- According to this invention alpha-isatin hat'logenid, or derivatives thereof all of which compounds I include under the term alpha-isatin halogenid @body, are caused to react with derivatives of 1.8-naphthalenedi'amin in which the two nitrogen atoms form part of a third ring containing six atoms, whereby coloring matters are obtained which are suitable for application to the fiber in the form of their leuco compounds. The said coloring matters can, if desired, be halogenated, the halogenated products producing dyeings generally of.

colored shades difi'erent from, and often be i-ng faster than, those obtained from the non-halogenatedproducts.

l o-c1+ on The coloring matter thus obtained can be halogenated. For instance, if it. be treated with chlorin in the presence of cial acetic acid and sodium acetate, a brownchlorinateddehydro compound is obtained, by the reduction of which the chlorinated coloring matter is obtained as a dark blue powder. It-dyes cotton 'fast pure blue shades. If, in this example, in-

- stead of isatin alpha-chlorid, other coinmethin derivatives thereo pounds, such for instance, as nitrohalogenisatin chlorid, or naphthisatin chlorid, be employed, or if, in place of permaphthimid-azole, substitution products, or the be employed,

Example 3: Suspend arts of dihydzgiod Application fi.."d AugustlB. 1912. Serial No. 714,845.

PROCESS OF PRODUCING THEM.

Specification of Letters Patent. PatentedDec, 29, 1914:.

The following will serve to illustrate further the nature of this invention and how it can be carried into practical effect, but the invention is not confined to these examples.

The parts are by weight.

Example 1: Prepare a solution of isatin alpha-chlorid from 70parts of isatin, parts of phosphorus pentachlorid and 600 parts of benzene, and then allow this solution to run into a boiling mixture of 100 parts of peri-naphthimid-azole (perimidin) and 1,000 parts of benzene. The liquid rapidly turns blue and coloring matter is precipitated; Boil forhalf an hour, cool and corresponding coloring matters can be obtained.

Example 2: Suspend 100 parts of 1.8; naphthalene-diamin-thiourea in 1500 parts of benzene and'add a solution of isatin alpha-chlorid (prepared from 70 parts of isatin). Boil in a reflux apparatus for from 1 to 2 hours, filter off the coloring matter and wash it with benzene and with .alco-' holic sodium acetate solution. It is a blackblue powder which yields a bluish green solution in concentrated sulfuric acid anda blue solution nitrobenzene. 'It dyes cot ton blue from a yellow vat. Its formation can be represented by the equation a solution of 5-bromisatin chlo id (prepared from parts of fi-bromisatin, 100

' parts of benzene).

the coloring matter and wash it with hen-- acne and with alcoholic sodium acetate solution. It is a blue powder WhlCh yields a acid and a blue solution with violet tinge in nitrobenzene. It dyes cotton violet-blue from a yellow vat. y

The following table illustrates some of the properties of some of the coloring matters which can be obtained according to this blue-green solution in concentrated sulfuric invention. I

i i -Solutionln i t as? more M 1 lei'lmldin and lsatln emona..l..- Vlolet-blue....' Yeuow...'... 31-... Blue.

2-methyl-per1mldln+5.7-dlbromlsatin chlorld Green-blue... Blue Yelluwnm sme ma... Blue-green. Pamrdlmethylamlno'phanyl-perlmidlni-l-lsatlne1 1orld.... Green bluen Blue-green.... Yellow B1ue-green.... Blue-green. 1.8-Naphthalene-diamin-thlouma+laatlnchlorld.......'... Blue-black, Blue; Yellow Bluegreenun Green-blue.

I 1.s-liaphthalene diamln thlourea+5.7-dibrom'lsatinch1orid Blue....'...,.. Green-blue". Blue-gteen.... Green-blue. v m manmmmtmm mmnt more... Indigo-blue... n g rga i Yentw ue men.... Green-blue.

' cup is rev vggsdlnthe blnydrcperlmldcn zHsatin chm rid... hm Violet-blue... Yellow B1ue-grecnnl. violet-blue. t ivcro mmidon-z-i-ebmm-anm chlnrld Blue violet-bluenll yellow Blue-groom. my; ma;

tinge. I

. 1. The process-of producing vat color ing matters by reacting with an alpha-isatin halogenid body, on a derivative of ILB-naphthalenesdiamin in which the two nitrogen atoms roam part of a third ring containing six atoms.

. 2..The process of producing vatcoloring matters by reacting with an alpha-isatlnhalogenidbody, on a derivativeiof 1.8-napht-halene-diamin in which the two nitrogen atoms form part of a third ring containing six atoms and then treating the product obtained witha halogenating agent.

I 3. The process of producing vat coloring.

concentrated sulfuric acid, from blue-green to violet-"blue solutions in v nitrobenzene,

' which yield yellow vats and dye cotton from blue-green to violet-blue shades:

5. As a new article of manufacture the colorin matter obtainable from dihydrorid, which new colqring 'mattr probably .perimi on 2 and 5 brom isatifialphachlopossesses a constitution corresponding to the formula and consists, when dry, of a blue powder, 7

' which yields a bluereen solution in concentrated sulfuric aci a blue solution with a violet tinge in nitrobenzene, and which 'ields a yellow vat and dyes cotton violetue.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

- EDUARD MUNCH. Witnesses ERNEST G. EHRl-IARDT, J osnrn Prmrrnn. 

